1 definition by Head Gooey Duck In Charge

To be unceremoniously stood up by a slore (half slut, half whore) with very little forewarning or notice. Usually in reference to downtown playdates or outings at local sushi restaurants. Not to be confined, however, "clamming" can also refer to any number of shunnings or snubbings. These may include lost invitations to lasagna dinners, trips to SxSw without you, or playing hard to get for one lousy date for over 10 years when you've known a breezy since they've barely had a shoulder length "bob" cut!

In conclusion, "clammed" "clamming" or being "clammed up" is any time some beezy tries to play you out like Snooki's Jersey Shore re-run... NAWWW!!!!
Guy 1: How'd the date go?
Guy 2: Not so good... I got clammed.
Guy 1: Damn! Really? What happened?
Guy 2: Well after two hours of waiting the waitress told me they needed my table for paying customers. She complimented my flowers though.

Guy 1: Heard you're taking a RV roadtrip to the wedding!? That's dope!
Guy 2: Yeah, but I'm getting clammed up..
Guy 1: What do you mean? I thought you were rolling with three hot girls??
Guy 2: Yeah, but they're all bringing dates and using me for their DD.
Guy 1: Damn bro.. this just ain't your year.
by Head Gooey Duck In Charge February 4, 2010
Get the Clammed mug.